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Chemistry

Chemistry
The percentage of Nitrogen in Air is

0.03
78.03
85.02
0.94

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Chemistry
The number of waves in n x 10th Bohr's orbit are

n2
n-2
n3
n

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Chemistry
Who developed Hydrogen Bomb?

Samuel Cohen
Edward Teller
J. Robert Oppen Heimer
Wernher Von Braun

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Chemistry
In deep-sea diving, divers use a mixture of gases consisting of oxygen and

Helium
Hydrogen
Argon
Nitrogen

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Chemistry
Which one is a naturally occuring noble gas

Argon
Boron
Sodium
Potassium

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Chemistry
Total number of elements in the Periodic table

127
115
112
118

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MORE MCQ ON Chemistry

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